下面是一篇完形填空,空已填好,请帮忙总结出里面的知识点,MostchildrenlikewatchingTV.OnTVtheycanlearnalot,andtheycanseeandknowmanythingsabouttheircountryandtheworld.Ofcourse,theycanhearovertheradio.but

　　下面是一篇完形填空,空已填好,请帮忙总结出里面的知识点,

　　MostchildrenlikewatchingTV.OnTVtheycanlearnalot,andtheycanseeandknowmanythingsabouttheircountryandtheworld.Ofcourse,theycanhearovertheradio.buttheycanlearnbetterandmoreeasilywithTV.Why?Becausetheycanhearandwatchatthesametime.Buttheycan'tseeanythingovertheradio.ManychildrenwatchTVonSaturdayorSundayevenings.Theyareverybusywiththeirlessonsonweekdays.ButafewchildrenwatchTVeverynight.Theygotobedverylate.Sotheycan'thaveagoodrest.Howaboutyou,myyoungfriend?